Product Engineering at Polar Product engineering at Polar is about shaping and building the finance layer for the next generation of AI products. We’re rethinking how billing works for a world of usage-based software, programmable pricing and AI agents – from real-time metering and pricing as code, to more adaptable customer identities, giving developers greater control over how they monetize their products. We operate as a small, remote-first team with a strong bias towards shipping. We value engineers who can work independently, collaborate when it matters and maintain a high bar for quality without sacrificing speed. Own product development end-to-end: Identifying opportunities, shipping and iterating on features across our stack – taking responsibility for both the technical implementation and the product outcome. Turning complex billing and monetization workflows into intuitive interfaces, powerful APIs and thoughtful abstractions that make our merchants’ lives easier. Ship with speed and quality: Delivering improvements continuously, balancing fast iterations with robust engineering, performance and attention to detail.



We’re particularly interested in senior engineers who combine strong technical foundations with exceptional product judgement and design sensibility. People who care deeply about developer experience, have opinions about what makes great software and know that building the right thing often means knowing what not to build. Some of the qualities and experience we value in this area include: Experience building, shipping and evolving production software, with deep expertise in at least one part of the stack and the ability to work confidently across frontend and backend systems. Engineering craft: A commitment to the quality of what gets built – from clean APIs and robust backend logic to thoughtful interactions, edge-case handling and performance. High standards for both technical quality and the experience delivered. Curiosity to learn new technologies and use tools, including AI-assisted development, while maintaining intimacy with the code, sound engineering judgement and ownership of what gets shipped. Experience with payments, billing or developer tools is a strong plus. We also love seeing open-source contributions and side projects. Frontend: Typescript (React, Effect) Backend: Python (FastAPI, Dramatiq) Infrastructure: Postgres, Clickhouse, AWS.

📌 Graduate design engineer apprenticeship (España)
🏢 Polar
📍 España